======================================
| [    8.404983][  T167] softirqs last disabled at (0): 0x0
| [    8.404985][  T167] Preemption disabled at:
| [    8.404986][  T167] vprintk_emit (kernel/printk/printk.c:2471)
| [    8.404997][  T167] Tainted: [W]=WARN
[    8.404998][  T167] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    8.405000][  T167] Call Trace:
[    8.405001][  T167]  <TASK>
[    8.405003][  T167]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[    8.405008][  T167]  ? vprintk_emit (kernel/printk/printk.c:2471)
[    8.405010][  T167]  __might_resched.cold (kernel/sched/core.c:9234)
[    8.405014][  T167]  ? tcp_ao_key_cmp (net/ipv4/tcp_ao.c:254 net/ipv4/tcp_ao.c:295)
[    8.405018][  T167]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[    8.405021][  T167]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    8.405025][  T167]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[    8.405029][  T167]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[    8.405031][  T167]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[    8.405035][  T167]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[    8.405037][  T167]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[    8.405039][  T167]  put_chars (drivers/char/virtio_console.c:1176)
[    8.405041][  T167]  ? __send_to_port (drivers/char/virtio_console.c:654)
[    8.405043][  T167]  ? console_prepend_replay (kernel/printk/printk.c:3005)
[    8.405045][  T167]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[    8.405049][  T167]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[    8.405051][  T167]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    8.405052][  T167]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    8.405054][  T167]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[    8.405056][  T167]  console_emit_next_record (kernel/printk/printk.c:3183)
[    8.405059][  T167]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[    8.405061][  T167]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    8.405063][  T167]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    8.405064][  T167]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    8.405066][  T167]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[    8.405068][  T167]  ? console_flush_one_record (kernel/printk/printk.c:3247)
[    8.405069][  T167]  console_flush_one_record (kernel/printk/printk.c:3268)
[    8.405072][  T167]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[    8.405074][  T167]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[    8.405076][  T167]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[    8.405077][  T167]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[    8.405079][  T167]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    8.405081][  T167]  ? lock_release (./include/trace/events/lock.h:68 (discriminator 22) kernel/locking/lockdep.c:5920 (discriminator 22))
[    8.405082][  T167]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[    8.405084][  T167]  ? __rcu_read_lock (kernel/rcu/tree_plugin.h:391 (discriminator 6) kernel/rcu/tree_plugin.h:414 (discriminator 6))
[    8.405086][  T167]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[    8.405087][  T167]  ? vprintk_emit (kernel/printk/printk.c:2478)
[    8.405089][  T167]  vprintk_emit (kernel/printk/printk.c:2479)
[    8.405092][  T167]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[    8.405093][  T167]  ? do_raw_spin_trylock (./include/linux/instrumented.h:55 ./include/linux/atomic/atomic-instrumented.h:1301 ./include/asm-generic/qspinlock.h:98 kernel/locking/spinlock_debug.c:123)
[    8.405095][  T167]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    8.405097][  T167]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[    8.405099][  T167]  _printk (kernel/printk/printk.c:2504)
[    8.405102][  T167]  ? snapshot_read.cold (user.c:?)
[    8.405103][  T167]  ? ___ratelimit (lib/ratelimit.c:97 (discriminator 3))
[    8.405107][  T167]  ? tcp_ao_key_cmp (net/ipv4/tcp_ao.c:252 (discriminator 1))
[    8.405108][  T167]  ? idr_get_free (??:?)
[    8.405110][  T167]  ? trace_irq_enable.constprop.0 (./include/linux/instrumented.h:82 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 ./include/linux/cpumask.h:650 ./include/linux/cpumask.h:1232 ./include/trace/events/preemptirq.h:40)
[    8.405113][  T167]  tcp_ao_add_cmd.cold (net/ipv4/tcp_ao.c:1646 (discriminator 3))
[    8.405116][  T167]  ? tcp_ao_cache_traffic_keys.isra.0 (net/ipv4/tcp_ao.c:473 (discriminator 1))
[    8.405118][  T167]  ? __x64_sys_bind (net/socket.c:1981 net/socket.c:1979 net/socket.c:1979)
[    8.405122][  T167]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[    8.405123][  T167]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    8.405125][  T167]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[    8.405126][  T167]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[    8.405130][  T167]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[    8.405132][  T167]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    8.405134][  T167]  do_tcp_setsockopt (net/ipv4/tcp.c:4088)
[    8.405138][  T167]  ? tcp_sock_set_maxseg (net/ipv4/tcp.c:3832)
[    8.405139][  T167]  ? _copy_from_user (./include/linux/instrumented.h:146 ./include/linux/uaccess.h:184 lib/usercopy.c:18)
[    8.405143][  T167]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    8.405144][  T167]  ? trace_irq_enable.constprop.0 (./include/asm-generic/bitops/instrumented-non-atomic.h:141 ./include/linux/cpumask.h:650 ./include/linux/cpumask.h:1232 ./include/trace/events/preemptirq.h:40 ./include/trace/events/preemptirq.h:40)
[    8.405146][  T167]  ? sock_poll (net/socket.c:1514)
[    8.405147][  T167]  ? inet_csk_get_port (./include/linux/spinlock.h:407 net/ipv4/inet_connection_sock.c:592)
[    8.405149][  T167]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    8.405151][  T167]  ? trace_kfree (./include/trace/events/kmem.h:97 (discriminator 22))
[    8.405152][  T167]  ? do_raw_spin_lock (./include/linux/instrumented.h:55 ./include/linux/atomic/atomic-instrumented.h:1301 ./include/asm-generic/qspinlock.h:112 kernel/locking/spinlock_debug.c:116)
[    8.405154][  T167]  ? kfree (mm/slub.c:6778 (discriminator 1))
[    8.405155][  T167]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[    8.405157][  T167]  do_sock_setsockopt (net/socket.c:2397)
[    8.405159][  T167]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    8.405161][  T167]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[    8.405162][  T167]  ? put_user_ifreq (./arch/x86/include/asm/compat.h:94 (discriminator 1))
[    8.405164][  T167]  ? lock_release (./include/trace/events/lock.h:68 (discriminator 22) kernel/locking/lockdep.c:5920 (discriminator 22))
[    8.405165][  T167]  ? __fget_files (./include/linux/rcupdate.h:882 fs/file.c:1100)
[    8.405168][  T167]  __sys_setsockopt (net/socket.c:2422)
[    8.405171][  T167]  __x64_sys_setsockopt (net/socket.c:2428 net/socket.c:2425 net/socket.c:2425)
[    8.405173][  T167]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[    8.405174][  T167]  ? trace_hardirqs_off_finish (./include/trace/events/preemptirq.h:36 (discriminator 22) kernel/trace/trace_preemptirq.c:95 (discriminator 22) kernel/trace/trace_preemptirq.c:90 (discriminator 22))
[    8.405175][  T167]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:78)
[    8.405176][  T167]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[    8.405179][  T167]  ? irq_exit_rcu (kernel/softirq.c:786)
[    8.405181][  T167]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    8.405183][  T167] RIP: 0033:0x7f48a7c0b2de
[    8.405185][  T167] Code: 55 48 63 c9 48 63 ff 45 89 c9 48 89 e5 48 83 ec 08 6a 2c e8 94 72 f7 ff c9 c3 66 90 f3 0f 1e fa 49 89 ca b8 36 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 0a c3 66 0f 1f 84 00 00 00 00 00 48 8b 15 e1
All code
========
   0:	55                   	push   %rbp
   1:	48 63 c9             	movslq %ecx,%rcx
   4:	48 63 ff             	movslq %edi,%rdi
   7:	45 89 c9             	mov    %r9d,%r9d
   a:	48 89 e5             	mov    %rsp,%rbp
   d:	48 83 ec 08          	sub    $0x8,%rsp
  11:	6a 2c                	push   $0x2c
  13:	e8 94 72 f7 ff       	call   0xfffffffffff772ac
  18:	c9                   	leave
  19:	c3                   	ret
  1a:	66 90                	xchg   %ax,%ax
  1c:	f3 0f 1e fa          	endbr64
  20:	49 89 ca             	mov    %rcx,%r10
  23:	b8 36 00 00 00       	mov    $0x36,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 0a                	ja     0x3c
  32:	c3                   	ret
  33:	66 0f 1f 84 00 00 00 	nopw   0x0(%rax,%rax,1)
  3a:	00 00 
  3c:	48                   	rex.W
  3d:	8b                   	.byte 0x8b
  3e:	15                   	.byte 0x15
  3f:	e1                   	.byte 0xe1

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 0a                	ja     0x12
   8:	c3                   	ret
   9:	66 0f 1f 84 00 00 00 	nopw   0x0(%rax,%rax,1)
  10:	00 00 
  12:	48                   	rex.W
  13:	8b                   	.byte 0x8b
  14:	15                   	.byte 0x15
  15:	e1                   	.byte 0xe1
[    8.405187][  T167] RSP: 002b:00007ffc3efa6e68 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
[    8.405191][  T167] RAX: ffffffffffffffda RBX: 0000000000412632 RCX: 00007f48a7c0b2de
[    8.405192][  T167] RDX: 0000000000000026 RSI: 0000000000000006 RDI: 0000000000000009
[    8.405193][  T167] RBP: 0000000000000009 R08: 0000000000000120 R09: 0000000000000000
[    8.405194][  T167] R10: 00007ffc3efa6e80 R11: 0000000000000246 R12: 00000000000000c8


Finger prints:
vprintk_emit:dump_stack_lvl:__kmalloc_noprof:put_chars:hvc_console_print